import type { RuntimeAcknowledgedChildExtensionsV1 } from "../../shared/types.ts";
export declare const RUNTIME_EXTENSION_ACK_EVENT = "subagent:acknowledge-extension";
export declare const RUNTIME_EXTENSION_ACK_PATH_ENV = "PI_SUBAGENT_RUNTIME_ACKNOWLEDGED_EXTENSIONS";
export declare const MAX_RUNTIME_ACKNOWLEDGED_EXTENSION_IDS = 32;
export declare const MAX_RUNTIME_ACKNOWLEDGED_EXTENSION_ID_LENGTH = 128;
export declare const MAX_RUNTIME_ACKNOWLEDGED_EXTENSION_FILE_BYTES: number;
export declare function isRuntimeAcknowledgedExtensionId(value: unknown): value is string;
export declare function projectRuntimeAcknowledgedExtensions(ids: Iterable<unknown>): RuntimeAcknowledgedChildExtensionsV1 | undefined;
export declare function sanitizeRuntimeAcknowledgedExtensions(value: unknown): RuntimeAcknowledgedChildExtensionsV1 | undefined;
export declare function readRuntimeAcknowledgedExtensions(filePath: string | undefined): RuntimeAcknowledgedChildExtensionsV1 | undefined;
export declare function writeRuntimeAcknowledgedExtensions(filePath: string, ids: Iterable<unknown>): void;
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